unlimited-storage

commit cbd557156b5f6cd51aa7f4f08784bc52978230f4
parent d80d1b79e1f7c463df6669ec73fbeaef640c9300
Author: Andrew Laack <andrew@laack.co>
Date:   Wed, 16 Jul 2025 22:53:56 -0500

I have fixed the issue, but not in the most elegant way.

Diffstat:
M
src/chunk.cpp
 | 
28
++++++++++++++++------------

1 file changed, 16 insertions(+), 12 deletions(-)
diff --git a/src/chunk.cpp b/src/chunk.cpp
@@ -6,6 +6,8 @@
 # include "../include/debug.h"
 
 
+const int IMAGE_HEADER_SIZE = 848;
+
 // read in saved chunk from file
 Chunk::Chunk(std::string filename) {
 
@@ -55,11 +57,16 @@ Chunk::Chunk(std::string filename) {
 
     std::string content = "";
 
+    // this would be better if we didn't preallocate a size for this section
+    // but that requires quite a bit more work for what I think is minimal benefit.
+
     // ENCODED HEADER (this data is encoded in the image itself):
-    // chunk number  4 bytes
-    // characters    4 bytes
-    // fnamelen      4 bytes
-    // filename      fnamelen
+    // chunk number  4 bytes (16 bits)
+    // characters    4 bytes (16 bits)
+    // fnamelen      4 bytes (16 bits)
+    // filename      fnamelen (max 800 bits - 100 chars)
+    //
+    // 16 + 16 + 16 + 800 = 848
 
 
 
@@ -131,10 +138,13 @@ Chunk::Chunk(std::string filename, uint start, uint x, uint y) {
     file.open(filename, std::ios::binary);
     file.seekg(start);
 
+    uint bytesToLoad = ((x * y) / 8) - IMAGE_HEADER_SIZE;
+    uint fSize = std::filesystem::file_size(filename);
 
-    uint bytesToLoad = (x * y) / 8;
+    if (fSize < bytesToLoad){
+        bytesToLoad = fSize;
+    }
 
-    uint fSize = std::filesystem::file_size(filename);
     LOG("FILE SIZE: " + std::to_string(fSize))
     LOG("LOADING IN " + std::to_string(bytesToLoad) + " BYTES")
 
@@ -150,8 +160,6 @@ std::vector<char> Chunk::getChunk() {
     return this->chunk;
 }
 
-
-
 // use if header info is populated in the object
 // and you are trying to write back out what you read in.
 // append if not the first chunk.
@@ -284,10 +292,6 @@ void Chunk::writeImage(std::string filename, uint chunkNumber, std::string origi
     }
 
     LOG(std::to_string(added))
-    LOG(std::to_string(added))
-    LOG(std::to_string(added))
-    LOG(std::to_string(added))
-    LOG(std::to_string(added))
 
     this->written = added;